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Old April 18, 2019, 12:15 PM   #4
Grey_Lion
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Join Date: April 15, 2018
Location: DFW area - north Texas
Posts: 234
If you have a powder coated bullet and you have a desire to use a high temp burning powder, then you could apply a gas check to the bullet ( assuming it's got the correct profile to accept a gas check ) to prevent the smell of the high temp powder burning the powder coat polymer upon firing.

But most will tell you that putting a gas check on a powder coated round is generally " repetatively redundant " ;-) - you shouldn't want / need both.

General rules of thumb on gas-checks -
Pure lead castings - Rifle - yes - should have a gas check to prevent barrel leading.
Pistol - depends upon the barrel ( Glocks lead quicker than other barrels generally )
- depends upon the powder - H Titegroup burns hot and will give you more leading than H HP-38 which burns cooler and results in less leading
- depends upon the caliber - magnum calibers with more powder result in more leading - recommend gas checks on these. But .40 caliber or less typically don't need gas checks, indeed casting molds with gas check creases for them are hard to come by. Best bet on .40 and below is to alloy your lead with some tin or even some scrap solder will do it and harden the cast rounds by quenching them in water as they come out of the molds. I fire both powder coated and lubed .40 and haven't yet come across a bullet mold in .40 that has a gas check crease.

One warning note on powder coating - do NOT skip putting your powder coated bullets through a sizing die before loading as a cast round that chambers right by itself will be too large to chamber right once powder coated unless you size it again. In semi auto this gives you an extremely hard jam to clear.

Last edited by Grey_Lion; April 20, 2019 at 01:47 PM.
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